QtInfo - Use this tool if you want to know what version of the Qt framework you have installed in your Nokia smartphone. The application will also show details about the features supported by Qt in the current build, including among others audio & video formats and fonts...

NetQin Mobile Guard increases performance speed and minimizes the power consumption.
As mobile devices adopt more and more PC capabilities, performance speed and power consumption become critical issues...

Jbak TaskMan is a replacement for the built-in task manager. It also features shortcut launcher and application launcher.
Jbak TaskMan Features:
· Ultimate replacement of standard task list, which called by menu-key long press.
· Customisable quick launch, where you can add program, document, phone number, SMS and e-mail...